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<TITLE>JavaScript Source Code 3000:  Calculators:  Percent of Increase</TITLE>
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<META NAME="date" CONTENT="2000-09-09">
<META NAME="channel" CONTENT="Web Developer">
<META NAME="author" CONTENT="Joey Mornin (jmornin@gateway.net)">
<META NAME="section" CONTENT="Calculators">
<META NAME="description" CONTENT="Enter two numbers and JavaScript will help you determine the percent of increase.  This is a perfectly simple example of using a JavaScript return function.  Check it out!">

<SCRIPT LANGUAGE="JavaScript">
<!-- Original:  Joey Mornin (jmornin@gateway.net) -->
<!-- Modified with permission by Ronnie T. Moore -->




<!-- Begin
function findIncrease(form) {
var num1 = form.num1.value;
var num2 = form.num2.value;
return ((num2 - num1) / num1 * 100 + "%");
}
//  End -->
</script>
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<FONT COLOR="#006666"><b>Percent of Increase</b></font></font>
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<!-- Description --><!--content_start-->
Enter two numbers and JavaScript will help you determine the percent of increase.  This is a perfectly simple example of using a JavaScript return function.  Check it out!
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Enter the two numbers to determine the percent of increase:<p>
<input type=text name=num1 size=4> to <input type=text name=num2 size=4> 
<input type=button value="Solve" onClick="this.form.answer.value = findIncrease(this.form);"><p>
The percentage of increase is <input type=text name=answer size=6>
</form>
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<script>
document.increaseform.num1.value="20";
document.increaseform.num2.value="87";
</script>
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<tr><td BGCOLOR=yellow><font FACE="helvetica,arial,geneva"><b>JavaScript Source Code 3000:  Calculators:  Percent of Increase</b>
<p>Simply click inside the window below, use your cursor to highlight the script, and copy (type Control-c or Apple-c) the script into a new file in your text editor (such as Note Pad or Simple Text) and save (Control-s or Apple-s).  The script is yours!!!
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<input type=button value="Highlight All" onClick="javascript:this.form.txt.focus();this.form.txt.select();">&nbsp;&nbsp;&nbsp;&nbsp;
<INPUT TYPE="text" NAME="total" VALUE="Script Size:  1.17 KB" size=24>
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<textarea NAME="txt" ROWS=20 COLS=75 WRAP=VIRTUAL>

&lt;!-- TWO STEPS TO INSTALL PERCENT OF INCREASE:

  1.  Copy the coding into the HEAD of your HTML document
  2.  Add the last code into the BODY of your HTML document  --&gt;

&lt;!-- STEP ONE: Paste this code into the HEAD of your HTML document  --&gt;

&lt;HEAD&gt;

&lt;SCRIPT LANGUAGE="JavaScript"&gt;
&lt;!-- Original:  Joey Mornin (jmornin@gateway.net) --&gt;
&lt;!-- Modified with permission by Ronnie T. Moore --&gt;

&lt;! &gt;
&lt;! &gt;

&lt;!-- Begin
function findIncrease(form) {
var num1 = form.num1.value;
var num2 = form.num2.value;
return ((num2 - num1) / num1 * 100 + "%");
}
//  End --&gt;
&lt;/script&gt;
&lt;/HEAD&gt;

&lt;!-- STEP TWO: Copy this code into the BODY of your HTML document  --&gt;

&lt;BODY&gt;

&lt;center&gt;
&lt;form name=increaseform&gt;
Enter the two numbers to determine the percent of increase:&lt;p&gt;
&lt;input type=text name=num1 size=4&gt; to &lt;input type=text name=num2 size=4&gt; 
&lt;input type=button value="Solve" onClick="this.form.answer.value = findIncrease(this.form);"&gt;&lt;p&gt;
The percentage of increase is &lt;input type=text name=answer size=6&gt;
&lt;/form&gt;
&lt;/center&gt;

 

&lt;!-- Script Size:  1.17 KB --&gt;</textarea><br><font FACE="helvetica,arial,geneva"></font></td></tr>

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